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← ScienceWhich inefficiency arises in steam turbines when rapid steam expansion induces water phase transition?
A)Erosion damage from droplet impact✓
B)Increased friction from higher density
C)Reduced blade efficiency from surface tension
D)Heat loss due to lower steam pressure
💡 Explanation
When rapid expansion causes water phase transition during turbine operation, condensation results in small water droplets impacting turbine blades, causing erosion damage owing to the high kinetic energy transfer. Erosion damage arises rather than friction, efficiency loss, or heat loss, which involve independent mechanisms.
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